Separator



H. H. SMITH.

SEPARATOR.

APPLICATION 51112011114528.1918.

Patented J uly 8, 1919.

3 SHEETSSHEET l.

IIVI/ENTOR A TTORNEYS WITNESSES Tm: COLUMBIA PLAXOGRAPH cu., WASHINGTON.D. c.

H. H. SMITH.

SEPARATOR.

APPLICATION FILED .IUNEZB. ma

a SHtET-SHEET 2.

1,308,920. Patented July 8, 1919.

WITNESSES '3 INVENTOR v mu caumnu muoammn col. wunnuimu. o. t.

H. H. SMITH.

SEPARATOR.

APPLICATION FILED JUNEQB. 1918. 1,308,920. Patented July 8, 1919.

3 SHEETS-SHEET 3.

M v Hamce/i 5/71/76 TH. mum WIAPll-OO WASHING. D:-

UNITED STATES PA T orr on HORACE HOLLY SMITH, or TACOMA, wnsnmeron.

" sErAaA'ron: f,

Application filed June 28, 1918. Serial 110, 242,455. a

'of which the folor cubical particles from flat 'or. elongated;particles without reference to weight or other physical properties of,thematerials.

As an example; slate fractures or, breaks under some foriils of crushinginto essen:

tially flat or needle-like lumps which range from enormous articles.

break into approximately triangular or cubical pieces in almostfallinstances.

'" ducingmy invention recognition is taken Y senting grooves and likeshap eand direct the sanl ofthe difference in fracture and theresultingshapes and I take advantageof the same to separate the quartzorother particles of e to a compartment or place of deposit, while thefiat or particles are separately deposited elongated into any suitableany desired point of delivery.

receptacle ordirected to different .ways in which mineral quartz, coal,gravel, slate, diorite, erals break into lumps, and the difierentexposed surfaces presentedby the different shapes govern the separatingaction of the apparatus, it vention is adapted for the separation 0seeds or othermaterials presenting the general difference in shapesreferred to.

In carrying out my invention in practice use is made of an endless beltpresenting an incline for each separating unit and a transverseconveying roller, together with means to deliver the material at theangle of the incline. and roller, the belt, specifically, prerifiles andthe conveyer roller presenting a spiral. r

The invention will be particularly explained in thespecific descriptionfollowing. Reference istobe ad to theaccompanying drawings forming apart of this specifi- Specification of Letters Patent.

have invented a new.

apparatus is designed to run extends beneath rollers size down to the.smallest. On the other hand, quartz will.

In pro-..

Thus, the. apparatus depends for its operation on the or other rocks orm nbeing understood thatthe in- I grooves decreases.

Pa en lys; .,191 a cation, it being understood I Figure 1'- is aembodying my invention;

Fig. 2' is aplan view. thereof,

the line 33,'Fig. 1'; .5 a

' Fig 4 is an e'larged "cross section of a portion of the belt} Incarrying out y invention in accordance with theillustrated example anendless belt], 10, isemployed which runs over jend rollers 11, 11,mounted in l y suitable frame 12: The belt at the bottom or idle Fig. 3is transverse verticalsection -on tance from the rollers 11,11" therollers 13 the beltrests The upper workingrun of that the draw- .ingsare merely illustrative of oneexa mple of the invention. '1 jsideelevation ofa separator 13 a short d1sibe c f I the belts runs aboutrollersl l and in connection with the working face of the belt I employtransverse,

conveyer rollers, u at d ei p -a 1 l d s gnat d 15;" 1511f The rollersar tively t the conveyer rollers so will'present an i cline at eachthere being three inthe e? at, elevations .rel'athat the belt separating unit, the inclines being designated 10*, 10?,

10 and up which inclines r latively flat parf-I ticles will travel. Thebelt 10 in the working face thereof is corrugated or grooved, thegrooves, 16, running with the direction'of allel or substantially sowith the side edges of the belt, the grooves thus producing intermediateriflies of ribs. As best seen in Figs. 3 and e the grooves withintermediate groovefpres'ents a side walls '18. Advantageously and withgood. results ,the side walls 18 are at an flat surfaces 19. Each angle.of inclination. of twenty-five degrees Also,

(with reference to the belt surface);

as clearly seen in Figs. 3. and ethe respective grooves or corrugations.16 aresucoessively 16 present angular walls I of decreasing depth fromone slde travel of the belt and in practice being parea botto1n1-7 andflaring edge of the "belt towardthe opposite. edge i where they mergethebelt surface. In practice, he Width .of

the surfaces 19 separating adjacent grooves or substantially so into 16are equal to the Width of flaring side walls 18. The same angleofthewalls 1S and therelative width of the intermediate surfaces 19 arepreserved though'thedepth of the-- t t th max mum. d pth. of he: groovesvaries with the material being; treated, a

I i would mention also.

set

lesser depth being required according to the smallness of the particlesof the material being treated.

he conveyer journals at the nals each roller rollers 15, etc., havesuitable ends and b Thus, since the diameter of the conical coreincreases gradually from spiral toward the opposite end, the depth ofthe spiral groove formed by the rib 21 will be of decreasing depth fromone end of the screw to the other, that'is to say, from one side edge ofthe belt toward the opposite edge, the greater depth of the spiral beingat that side of the belt having the deeper The spiral rib 21 has radialp uberances 22 that enter the grooves of the belt and act as agitators.

hree separating ormed by the incline 10 and the separating roller 15 andadjacent to one side of the belt, that is to say, the side havinggrooves. The angle of the belt at the inclines is varied by means ofseparating rollers at the under side of the belt, there,

roller 26 at thefirst separating llers 26 at the second unit, and asingle roller 26 at the third unit. In the second. unit, in W amount ofmaterial height from the first unit, two ro considerable two rollersdrops a unit, the

and a relatively long belt-run are employed,

traveling arther and farther across and v as the material approaches theend of the spiral. The increasing diameter of the core ObVlOHSlY causesthe lJIELHSVQlSGlY lDOViDg belt, the idea being to give all the materialunits are shown in the angle.

the deepest hich a relatively large 7 clean the chutes formed he angleof the belt relal to move gradually higher on the less and less of anangle to travel as separation progresses the distinction in shape of vthe particles becomes less and less owing to e flat or approximatelyflat particles having started up the incline; thereby minimizing thetravel of the separated material card by the belt. A less depth of thebelt across the deeper grooves and ribs is lessened by graduallyreducing the depth of the belt grooves to that actually required toarrest the remaining fiat particles. The screw carries across the beltthe particles not taken up the incline and discharges at the oppositeside from the point of feed. Itis to e noted that on the ofthe conveyerscrew is madewith a wide wear and make easy riding on the belt. 'As thematerial passes to the top of the first incline l0 first roller 14:, thematerial falls toward the second incline; with the uting the materialand dlrectlng toward the feed side of the belt, I

certain material, more or less bafiles 24 may be employed. duct comingfrom the belt over the first roller 14 is suificiently by the b bearranged to deposit the material at the side of the belt to be talzenaway but if the p 011 the belt at incline adjacent to the second screw15. it further cleaning is required a second set of bafiles or chutes24* is provided on a suitable support 25. It will be understood that anysuitable means may be provided such as like for th these not being shownas they form and about the purpose ofclistribs it laterally provide,inclined baffles 2% which are formed on or ternate grooves an messes Inoperationjmaterial is fed through the chute 23 or the'like atthe-angle-pfthe'first screw 15' and the belt,- andj adjacent to thedeepest pa'rt ofithe spiral groove, so that thewider rac ius of the ribsserve a guard to prevent the feed material from passing over theadjacent side. of [the belt. The greater depth of the belt grooves atthat side of the'belt at which the material is delivered, serves toarrest those article notpronouncedly flatand also the greater depth ofthe spiral ribs-gives the screw a capacity to carry the relatively largeamount 'ofma ter'ial across the belt.- As'thematefial isearriedtransversely of thejbelt', an increasing amount of the flatpartic'l'esis carried'up by the belt so that' a'less depth of's'piral grooves inthescrew 'anda less depthof-belt grooves sufliceto' separate the remai ingflat particles and carry the remaining particles over the" belt tobe'dis-charg'ed from the apparatus; All 'the'mat erial carried up bythebelt of the firstunit drops to'the belt of the sec 0nd unit, beingcarriedover' the first roller 1e and bafiies 245 are employed accordingto the ha er o the a m l an t d gree.

to which separa' 'ion' takes place" in the" first unit, in order to thebelt of the second unit and more or less to that side of the belt atwhich the depth of the spiral screw is positioned. The same separatingprocess takes place as in the first unit and if the separation of thecomparacompleted, it wil be completed in the third unit or additionalunits as may be found necessary accord' to the character of the materialbeing treated.

. I would state in conclusion that while the illustrated exampleconstitutes a practical embodiment of my 'nvention, I do not limitmyself strictly to the mechanical details herein illustrated, sincemanifestly the same can be considerably varied without departure fromthe spirit of the invention as defined in the appended claims.

Having thus described my invention, 1 claim as new, and desire to secureby Letters Patent:

1. A separator of the class described including an endless bel and aconveyer screw disposed transversely of the working face of the belt,said belt rising at an incline from the screw and presenting alternategrooves and ribs running in the direction of travel of the belt, andthereby crossed the screw so t at the transverse movement of relativelyflat particles by the screw will be arrested by the belt grooves andribs to permit said particles to be carried up by the belt.

2. A separator of the class described including an endless beltpresenting an incline and having in the working face thereof d ribs runing wit distribute the material'ove'r" direction of" travel of t e belt,anda' trans verse separator screw,

whichlie in the same cylindrical'surface; 4

31 A separator of the "class described 111-,

eluding an endless belt,

presenting a conical core and spiral' rib the convolutions of whi' h liein the same GYllII dri'cal" surface; togetherwith means-to (le liver thematerialtobe separated to said belt' adjacent that endof the rollerhaving the smaller end of the core so that the greater de'pth'of' thespiral ribs serves'as a guar to preve'ntthemateria passing from the beltat the side adjacent to said'deeper ribs.

4.1K separator of the class described including an endless: belt, i i

the working surface thereof, said screw presenting a spiral groove ofdecreasing depth,

fromone; end f the screw to the other, an said belt rising atan incline5. A separator of the class described includingia'n endless-belt havinggrooves inthe isrk i f e e of and direction of travel of the'belt, and atransverse conveyer screw adjacent to the working face of the" belt,the. convolutions of sai screw having agitating p-rotuberances at theperiphery adapted to enter the grooves 0 the belt.

6. A separator of the class described ineluding an endless belt havinggrooves in the working face thereof and running with the direction oftravel of the belt, and a transverse conveyer screw adjacent sai face,the depth of the grooves decreasing from one side of the belt to theother and toward the discharge end of the screw.

1 7 A separator of the class described including and endless belt, atransverse conveyer screw adjacent to the working face of the belt,saidbelt rising at an incline from the screw, a roller beneath the belt atthe incline, and means to move the roller relatively to the belt toadjust the angle of inclination of the latter.-

8. A separator of the class described in cluding an endless beltpresenting a transverse conveyer screw adjacent to the working face ofthe belt, said belt risin at an incline from the screw an havin aternate grooves and ribs in the working ace thereof, said groovespresenting flaring side walls at an angle of approximately twenty-fivedegrees to the belt surface.

9. A separator of the class described including an endless beltpresenting a transverse conveyer screw adjacent to t e workf the belt,said belt rising at an inthe screw an having a ternate the working facethereof, said grooves presenting flaring side walls at an angle ofapproximately twenty-five degrees to the belt surface, the interveningribs presenting flat surfaces approximately the convolutions o'f or is 7a conveyer' screw disposed ransversely of the belt ad acent to omthe'screwrunmng with the the sam width as the flaring walls of thegrooves.

11. A separator ofthe class described including an endless belt,transverse conve er'screws Working face of il verse conveyer screwsadjacent to the working face of the belt, said belt 0 ines rising fromthe respective presenting drops between the inclines so that materialwill feed by gravity from one incline to the next following incline;together with bafll and material received thereby.

n a separator of the class described, in the working face In aseparatorof the class described,

having grooves in the side walls at an angle .of approximatelytwenty-five degrees with respect to the belt surface, together with atransverse conveyer screw to move material across said belt.

HORACE HOLLY SMITH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

. Washington, D. G.

